| Council Bluffs to Karlovo | 5,564.28 mi (8,954.84 km) |
| Council Bluffs to Karnobat | 5,636.42 mi (9,070.94 km) |
| Council Bluffs to Kavarna | 5,636.88 mi (9,071.68 km) |
| Council Bluffs to Kazanlak | 5,585.38 mi (8,988.80 km) |
| Council Bluffs to Knezha | 5,495.70 mi (8,844.47 km) |
| Council Bluffs to Kostinbrod | 5,501.87 mi (8,854.41 km) |
| Council Bluffs to Kozloduy | 5,469.44 mi (8,802.22 km) |
| Council Bluffs to Kyustendil | 5,511.06 mi (8,869.19 km) |
| Council Bluffs to Levski | 5,537.32 mi (8,911.46 km) |
| Council Bluffs to Lom | 5,450.76 mi (8,772.15 km) |
| Council Bluffs to Lovech | 5,535.69 mi (8,908.83 km) |
| Council Bluffs to Lukovit | 5,514.01 mi (8,873.93 km) |
| Council Bluffs to Lyaskovets | 5,570.44 mi (8,964.76 km) |
| Council Bluffs to Mezdra | 5,500.99 mi (8,852.99 km) |
| Council Bluffs to Momchilgrad | 5,642.79 mi (9,081.20 km) |
